Probiotics are live bacteria that, when given in appropriate proportions, provide a health benefit to the host. The host's health benefit is mostly focused on gut microbiota modification. The indigenous intestinal microflora in humans contributes to a variety of functions that benefit the host's health. Probiotics have received a lot of attention in recent decades in science and medicine as a preventive and therapeutic agent against a variety of ailments. The restoration of gastrointestinal microbiota and the occurrence of recovery processes in the digestive system are the initial benefits of their use. This aids in the improvement of the health of various organs and systems. By modifying and sustaining immunological activity in the gut, probiotic organisms can have a positive impact on human health. While prebiotics aid in the growth of probiotics, their synergistic interaction with probiotics provides the host with numerous benefits.